Re: [GXemul-users] Running RTEMS on MVME2100 or MVME5500

[Anders G. <ga...@gm...>]

Mån 2010-03-15 klockan 11:35 -0500 skrev Joel Sherrill:
> Hi,
> 
> I am the maintainer of RTEMS and would like to
> be able to test our MVME2100 and MVME5500 support
> on gxemul.

Hi Joel.

Sorry, those are not actually supported GXemul machines (see
http://gxemul.sourceforge.net/gxemul-stable/doc/intro.html#emulmodes for
details). They are listed when you run gxemul -H (which also lists
bogus/unsupported modes), but unfortunately that's about it.

> But the current svn trunk aborted with internal issues.

I assume it was related to old legacy interrupt code not being updated
to the (by now) other legacy interrupt code. I've checked in a bogus
hack in SVN revision 5729 (*) which should at least print some initial
boot messages, but again, the MVME5500 board is not really emulated.

$ ./gxemul -e mvme5500 powerpc/ppc-rtems/mvme5500/hello.exe
GXemul (unknown version)    Copyright (C) 2003-2010  Anders Gavare
Read the source code and/or documentation for other Copyright messages.

Simple setup...
    net:
        simulated network: 10.0.0.0/8 (max outgoing: TCP=100, UDP=100)
        simulated gateway+nameserver: 10.0.0.254 (60:50:40:30:20:10)
        simulated nameserver uses real nameserver 192.36.120.11
    machine:
        memory: 64 MB
        cpu0: PPC750 (I+D = 32+32 KB, L2 = 1024 KB)
        machine: MVME5500
        loading /home/debug/emul/powerpc/ppc-rtems/mvme5500/hello.exe
        cpu0: starting at 0x00003198

NOTE: This is a LEGACY emulation mode.

-------------------------------------------------------------------------------

[ using UNIMPLEMENTED spr 568 (dbat4u), pc = 0x909c ]
[ using UNIMPLEMENTED spr 569 (dbat4l), pc = 0x90a0 ]
[ using UNIMPLEMENTED spr 570 (dbat5u), pc = 0x90a4 ]
[ using UNIMPLEMENTED spr 571 (dbat5l), pc = 0x90a8 ]
[ using UNIMPLEMENTED spr 572 (dbat6u), pc = 0x90ac ]
[ using UNIMPLEMENTED spr 573 (dbat6l), pc = 0x90b0 ]
[ using UNIMPLEMENTED spr 574 (dbat7u), pc = 0x90b4 ]
[ using UNIMPLEMENTED spr 575 (dbat7l), pc = 0x90b8 ]
[ using UNIMPLEMENTED spr 560 (ibat4u), pc = 0x90bc ]
[ using UNIMPLEMENTED spr 561 (dc_adr), pc = 0x90c0 ]
[ using UNIMPLEMENTED spr 562 (dc_dat), pc = 0x90c4 ]
[ using UNIMPLEMENTED spr 563 (ibat5l), pc = 0x90c8 ]
[ using UNIMPLEMENTED spr 564 (ibat6u), pc = 0x90cc ]
[ using UNIMPLEMENTED spr 565 (ibat6l), pc = 0x90d0 ]
[ using UNIMPLEMENTED spr 566 (ibat7u), pc = 0x90d4 ]
[ using UNIMPLEMENTED spr 567 (ibat7l), pc = 0x90d8 ]
[ using UNIMPLEMENTED spr 1018 (dccr), pc = 0x9284 ]
-----------------------------------------
Welcome to rtems-4.6.99.2(PowerPC/PowerPC 750/mvme5500) on MVME5500-0163
-----------------------------------------
Now BSP_mem_size = 0x1FE00000
BSP_Configuration.work_space_size = F800


> Is there someone who wouldn't mind doing the gxemul side of getting
> RTEMS to run on this.

A real implementation would require someone to go through all devices
and CPU features that GXemul is lacking for this machine. That can take
time. If there is e.g. a NetBSD port for MVME5500, then that would help
a lot, many parts of GXemul are based on reverse-engineering how NetBSD
uses various devices.


Anders

(*)
http://gxemul.svn.sourceforge.net/viewvc/gxemul?view=rev&revision=5729